# cohere-rerank-3.5

Since August 31, 2026, Pinecone API answers calls to the model cohere-rerank-3.5 from a newer version.

On August 31, 2026, Pinecone API will retire model cohere-rerank-3.5. Requests using this model will be automatically redirected and served by cohere-rerank-4-fast instead of failing.

## What to use instead

To control the transition yourself, migrate your rerank requests to cohere-rerank-4-fast before August 31, 2026.

- API: Pinecone API (api.pinecone.io)
- Model: cohere-rerank-3.5
- Kind: Model retirement
- Takes effect: August 31, 2026
- Calls after that day: answered by a newer version
- Calls it hits: `model cohere-rerank-3.5`
- Source: [Changelog](https://docs.pinecone.io/release-notes)
- Verified: October 26, 2026, against Pinecone API's own pages
- Page: https://www.okapi.bot/models/pinecone-api/cohere-rerank-3.5/

## Pinecone API's words

> August 31, 2026: requests to cohere-rerank-3.5 are automatically served by cohere-rerank-4-fast.

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent